Path: chuka.playstation.co.uk!scea!greg_labrec@interactive.sony.com
From: Mike Fulton <mfulton@glamoursoft.com>
Newsgroups: scea.yaroze.programming.gnu_compiler
Subject: Re: which code space to use?
Date: Thu, 01 May 1997 17:59:00 -0700
Organization: SCEA Net Yaroze News
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Ed, I don't have a yellow manual in front of me to double check what it
actually says, but you've got it backwards.  Any instruction with a high
nybble value of 0x00 or 0x08 will be cached.  Any instruction with a
high nybble value of 0xa0 will NOT be cached.

You can use this information and techniques using function pointers to
exercise some control over what routines are executed using the cache
and which are not.



Mike Fulton @ SCEA



Ed Federmeyer wrote:
> 
> I noticed that the demos all link starting at address 0x8------- (k0
> space), but on page 15 of the Yellow 'User Guide', it seems to indicate
> that code running out of this space does not use the Instruction cache
> of the CPU.  (The chart on that page says "Not available" under the
> I-cache column for k0 space.)
> 
> EdF